Niggli, Urs and Niggli, Idda. 2007. Esquisse Grammaticale du Ninkare au Burkina Faso. Ouagadougou: Summer Institute of Linguistics.
@book{sinnemakizeromarking-Niggli2007, address = {Ouagadougou}, author = {Niggli, Urs and Niggli, Idda}, publisher = {Summer Institute of Linguistics}, title = {Esquisse Grammaticale du Ninkare au Burkina Faso}, year = {2007} }